Furnace tune-up in Farmington Hills, MI

Better Tune-Ups for Longer-Lasting Furnaces – Just $79

Thornton & Grooms HVAC technician in branded hat filling out checklist while inspecting a furnace

Tune-ups that keep you comfortable with…

  • Fewer breakdowns
  • Longer equipment lifespan
  • Lower utility bills

What's Included

What's Included in Our 19-Point Furnace Tune-Up?
  1. Examine thermostat
  2. Test for carbon monoxide leaks
  3. Inspect heat exchanger
  4. Measure temperature differential
  5. Inspect furnace controls
  6. Check safety devices
  7. Test for gas leaks
  8. Inspect gas valve operation
  9. Test ignition system
  10. Inspect electrical connections
  11. Test gas pressure
  12. Test flame sensing systems
  13. Inspect furnace cabinet
  14. Lubricate all applicable moving parts
  15. Test volt and amp draw on motors
  16. Inspect breaker
  17. Test heat pump operation
  18. Test cycle for proper operation
  19. Service humidification system


Celebrating 85+ years of service in the great state of Michigan

We appreciate the personal and professional service…”

Today we had our annual maintenance check of our new furnace. Martin P. did a great job explaining everything he was doing and promptly making a few adjustments. We appreciate the personal and professional service, both at our initial installation about a year ago and the follow-ups since then. Many thanks! We'll continue recommending T&G.

-Tex R.

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We Care Guarantee

A Guarantee You Won't Find Anywhere Else.

We promise to provide our customers with 5-star service—no matter what. If you are not satisfied with our level of service at any point, we ask that you inform us so we can make it right before we leave your home.

Real Guarantees

We honor these guarantees for every furnace tune-up:

  • Professionalism

    We are a team of skilled, knowledgeable professionals who undergo regular training to provide top-notch service and solutions at a fair cost.

  • Reputation

    We truly care about providing 5-star service to our customers and our community. With thousands of Google reviews (we reply to each one!), it seems our customers agree.

  • Convenience

    We know customers already have enough to deal with, so we offer friendly and convenient service from the first call to our post-service process.

Home Care Club

Join the Home Care Club and Save on Home Services

Get lower monthly energy bills and avoid expensive A/C repairs by joining the Home Care Club. With bi-annual HVAC check-ups, our comfort specialists will catch small issues before they snowball into costly fixes. Plus, with yearly maintenance, you’ll keep your A/C equipment under warranty for as long as possible.

Additionally, plan members receive:

  • Markdowns on HVAC, plumbing, and drain repairs
  • Discounts on comfort system replacements
  • Extended warranties
  • Lower service fees
  • And more...

Ready for Better Furnace Tune-Ups?